00495nam a2200145Ia 4500020001500000082001900015100004300034245010700077260003400184300002300218490005100241500000500292700002400297700002800321  a3540546782  a510.3bEn56.63  aEncyclopaedia of Mathematical Sciences  aPartial differential equations VIbelliptic parabolic operatorscEd. by Yu. V. Egorov and M. V. Shubin  aBerlinbSpringer-Verlagc1994  a325p. Bibl. Index.  aEncyclopaedia of Mathematical Sciencesv V. 63  a  aEgorov, Yu V. ; ed.  aShubin, M. A. ; jt. ed.